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Finding the Fourth Proportional to 41.11, 61.67 and 25.87

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Solution

The fourth proportional to 41.11, 61.67 and 25.87 is: 38.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.11 : 61.67 = 25.87 : x
  2. Step 2: Convert to fraction form
    41.11/61.67 = 25.87/x
  3. Step 3: Cross multiply
    41.11x = 61.67 × 25.87
  4. Step 4: Simplify right side
    41.11x = 1,595.09
  5. Step 5: Solve for x
    x = 1,595.09/41.11
  6. Step 6: Final answer
    x = 38.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.